Question about rivets?

[VegasHockey 1284]

Do most of you use the standard #8/9/10 steel rivets?

Has anyone experimented with rivets with a larger diameter head? What about different head types? 

Tried various materials other than basic steel, such as aluminum, bronze, or zinc coated steel?

Lastly, has anyone tried using tubular rivets that have a hollow head? 

[VegasHockey 1284]

Seems like stainless steel is the best way to go. They are slightly thicker than regular steel but dont rust and seem to have a higher tensile strength.